I'd like some AoE tools for the queen or an additional AoE robot that you can summon in scenarios where multiple targets are on screen (of course this robot would deal less single target damage).
We had the bishop turret in SB and even just a reskin of that would be better than not having anything at all.
I'm also a fan of DoTs so a meaningful single target one would please me a lot, I'd be fine with Bioblaster not sharing CDs with Drill or it being an oGCD